AC 20amp breaker trips mid day
Just came from Vegas 103 deg with no AC problems. At our new location which is also about 103 deg, the ac compressor would cycle and the fan would stay on with the thermostat on auto. Now it trips th...
Forum Discussion
Haycamper wrote:
The autoformer increases the output voltage but it doesn't increase the output power so the output current actually drops. The autoformer input current goes up when the input line voltage drops. So even though the output current may be 28 amps, the input current could be over 30 amps. The increase in voltage is not free it's not a power station where you can just turn up the boiler.
when your driving an induction motor, as the voltage goes down the current goes up, opposite of what one might think. As voltage drops, the motor "back emf" drops causing current to rise. So in a case like this the autotransformer actually can actually reduce current draw, especially as voltage drops down near 100V when driving a motor.
On a pure resistive load then good old ohms law for pure resistive loads applies.
